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berkelium
[ ber-kee-lee-uhm ]
noun
- a transuranic element. : Bk; : 97; : 249 (?).
berkelium
/ bɜːˈkiːlɪəm; ˈbɜːklɪəm /
noun
- a metallic transuranic element produced by bombardment of americium. Symbol: Bk; atomic no: 97; half-life of most stable isotope, 247Bk: 1400 years; valency: 3 or 4; relative density: 14 (est)
berkelium
/ bər-kē′lē-əm,bûrk′lē-əm /
- A synthetic, radioactive metallic element of the actinide series that is produced from americium, curium, or plutonium. Its most stable isotope has a half-life of about 1,400 years. Atomic number 97; melting point 986°C; valence 3, 4.
- See Periodic Table
Word History and Origins
Origin of berkelium1
Word History and Origins
Origin of berkelium1
Example Sentences
Take a few milligrams of berkelium, a rare radioactive metal that can be made only in specialized nuclear reactors.
Over the course of 30 years, his inventions contributed to the discovery of americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, nobelium, lawrencium, rutherfordium, dubnium and seaborgium.
It is evident in entries like francium, germanium, scandium, polonium, europium, californium, berkelium and americium.
Naturally there are berkelium, dubnium and darmstadtium, as well as livermorium - named after the Lawrence Livermore National Laboratory that, among other things, ensures that the US nuclear stockpile does not decay too quickly.
“We had to team up with the only place on the planet where berkelium can be produced and isolated in significant quantities,” Düllmann says.
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